CCNA interview question & Answers

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CCNA Interview Question Answers

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1) What is Routing ?   Directing is the
procedure of finding a way on which information
can go from source to destination. Steering is
finished by a gadget called switches, which are
system layer gadgets.
2) What is the purpose of the Data Link ?   The
employment of the Data Link layer is to check
messages are sent to the right gadget. Another
capacity of this layer is confining.
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3) What is the key advantage of using
switches?   At the point when a switch gets a
sign, it makes a casing out of the bits that was
removed from that flag. With this procedure, it
obtains entrance and peruses the destination
address, after which it advances that casing to
the proper port. This is an exceptionally
proficient method for information transmission,
rather than television it on all ports.
4) When does network congestion occur?   System
blockage happens when excessively numerous
clients are attempting to utilize the same data
transfer capacity. This is particularly valid in
huge systems that don't fall back on system
division.
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5) What is a Window in networking terms?   A
Window alludes to the quantity of fragments that
is permitted to be sent from source to
destination before an affirmation is sent back.
  6) Does a bridge divide a network into smaller
segments?   Not by any means. What a scaffold
really does is to take the huge system and
channel it, without changing the extent of the
system.
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7) Which LAN switching method is used in CISCO
Catalyst 5000? This model uses the
Store-and-forward exchanging strategy. It stores
the whole casing to its cushions and performs a
crc check before choosing whether or not to
forward that information outline.
8 ) What is the role of the LLC sub layer?   The
LLC sub layer, short for Logical Link Control,
can give discretionary administrations to an
application engineer. One alternative is to give
stream control to the Network layer by utilizing
stop/begin codes. The LLC can likewise give
mistake remedy.
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9) What are three types of LAN traffic? Unicasts
- expected for one host. Shows - expected for
everybody. Multicasts - expected for a lone a
subset or gathering inside a whole system.
10) What is directing?  Ans. Directing is
procedure of finding the most brief way to
communicate from source to destination. This
procedure is refined by the switches on system.
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11) What is VLAN?   Virtual LAN or VLAN is a
consistent grouper fragment system associated
with officially characterized ports on a switch,
they Broadcast control, Flexibility and security.
12) What is sub-Netting? Why it is used?   It is
utilized to break the bigger system into littler
sub-systems, utilized as a part of IP Networks.
Essentially utilized for minimizing the system
movement, advancing the execution, and dealing
with the system.  
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13) What is communication and how it is differ to
transmission?   Correspondence implies trading of
information amongst source and destination.
Though, transmission alludes to just exchanging
of information from source to beneficiary.
14) What are unicast frames?Ans. Unicast frames
are the most common type of network traffic. A
unicast frame is a frame intended for only one
host. The only station that processes this frame
is one station that has its own MAC address in
the destination portion of packet.
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